Cast Spiral - Hanayama Metal Puzzle

Cast Spiral - Game Rank 5.  Spiral Hanayama Metal Brain teaser consists of five very similar looking, jigsaw-shaped, solid metal pieces. The pieces join together similar to those of a jigsaw puzzle. Alas, but not quite so simply. Small, compact, hand-size, tricky puzzle. The objective is to separate the five pieces and then rejoin back together in the shape of a disc. NO FORCE ever needed. Clever puzzle and moderately tricky. Hanayama rates this as a level 5 on a scale of 1 to 6 (where 6 is the most difficult.) Your experience may differ substantially. Ratings are subjective. The dice face on the packaging indicates the level of challenge. Most puzzlers do find the SPIRAL to be a very satisfying challenge. Great for fidgety hands. Solid cast metal pieces. This is one of the stronger Hanayama puzzles. Great for ages 14 to 105 years.Reminder: only clever movements. NO FORCE. There are 60 plus different cast metal brain teasers in the Hanayama series. Hanayama is the Japanese manufacturer